Udorthents Soils

Soil Map Unit Description from the RI Soil Survey Report

UBE—Udorthents, very steep.

This unit consists of well drained to excessively drained soils along mainly
the southern edge of Block Island adjacent to Block Island Sound in the Mohegan
Bluff area. Wind, waves, and rain have eroded these soils and undercut areas on
bluffs. Areas are long and narrow and mostly range from 10 to 200 acres. This
unit consists of about 50 percent Udorthents, 20 percent steep, severely eroded
areas without vegetation, 15 percent Beaches, and 15 percent other soils.

Included with this unit in mapping are areas, up to 10 acres in size, of
excessively drained Gloucester and Hinckley soils and well drained to moderately
well drained Bridgehampton soils.

This unit is used for summer recreation activities such as sunbathing, surf
fishing, and hiking. The unit is unsuited or poorly suited to most other uses
because of slope, position on the landscape, erosion, and exposure to winds and
salt spray. Capability subclass and woodland group not assigned.

Soil Map Unit Description from the Soil Survey of Rhode
Island

UD—Udorthents-Urban land complex.

This complex consists of moderately well drained to excessively drained soils
that have been disturbed by cuffing or filling, and areas that are covered by
buildings and pavement. The areas are mostly larger than 5 acres. The complex is
about 70 percent Udorthents, 20 percent Urban land, and 10 percent other soils.
Most areas of these components are so intermingled that is was not practical to
map them separately.

Udorthents are in areas that have been cut to a depth of 2 feet or more or are
on areas with more than 2 feet of fill. Udorthents consist primarily of
moderately coarse textured soil material and a few small areas of medium
textured material.

Included with this complex in mapping are areas, up to 10 acres in size, of
undisturbed soils. Also included are a few areas that are entirely Udorthents.

Most cut areas were used as a source of fill material, but in some areas cuts
were made in order to level sites for buildings, recreational facilities, and
roads. Most of the filled areas were built up and leveled for urban development.
In some areas fill has been used to build up recreational areas and highways.

The permeability and stability of this unit are variable. The unit requires
onsite investigation and evaluation for most uses. Capability subclass and
woodland group not assigned.

Soil Map Unit Description from the Soil Survey of Rhode
Island

Ur—Urban land.

These areas consist mostly of sites for buildings, paved roads, and parking
lots. Most areas are in intensely built-up portions of Providence and New port
Counties. The areas are mostly rectangular and range from 5 to 100 acres. Slopes
range from 0 to 10 percent but are dominantly 0 to 5 percent.

Included with this unit in mapping are small, intermingled areas of Udorthents;
somewhat excessively drained Merrimac soils; well drained Canton, Charlton, and
New port soils; and moderately well drained Pittstown, Sudbury, and Sutton
soils. Included areas make up about 15 percent of this map unit.

Areas of this unit require onsite investigation and evaluation for most land use
decisions. Capability subclass and woodland group not assigned.

Soil Map Unit Description from the Soil Survey of Rhode
Island

Urs—Urban land, 0 to 3 percent slopes, sand substratum.

These areas consist mostly of sites for buildings, paved roads, and parking
lots used for beaches. This unit is mapped along the coastal zone of Washington
County. The impervious area of this map unit is underlain by beach and dune sand
deposits, dredge sand, and in some areas tidal marsh deposits (peat). Water
tables are usually within 1 to 4 feet below the pavement surface, some areas are
subject to tidal and coastal storm flooding.

Included with this unit in mapping are small, intermingled areas of Udorthents;
beaches, Fortress, Succotash, and Hooksan soils. Matunuck and Sandyhook soils
are on nearby tidal marshes. Included areas make up about 5 percent of this map unit.

Areas of this unit require onsite investigation and evaluation for most land use
decisions. Capability subclass and woodland group not assigned.